Ususally posh means sophisticated, or snobby... or something like that, but we small towners use it to mean:
Piece Of SHit
"I have to go pick up my posh car. It's in the shop again!"
by BarbieChik December 24, 2005
Get the mug
Get a posh mug for your guy Vivek.
to be subtle about it, to not go straight for a subject, to beat around the bush
"Hey, Meg can you ask James if he likes me? but can you BE POSH ABOUT IT?"
by Karmictic Latnessa April 28, 2015
Get the mug
Get a Posh mug for your guy Manafort.
Kyle: Hey, Melvyn, isn't that Kayleigh?
Melvyn: Oh, P.O.S.H.? Yeah, that bitch is such a cockblock...
by ProstiTot September 15, 2008
Get the mug
Get a P.O.S.H. mug for your bunkmate Georges.
POSH is an acronym for Piece Of Shit

Now why isn't it just POS?
Simply because Posh is also a word meaning 'Rich or trendy' and it's funny how the word and the acronym contradict =P
Look at this used car I just got off the lot bro!

Man, that is one POSH car...
by Moose69 July 25, 2008
Get the mug
Get a POSH mug for your Aunt Jovana.
the re-enactment of vanilla ice mixed with E.T. ; a well blended mixture of PO and SH.
by pokishimama March 01, 2003
Get the mug
Get a posh mug for your cousin Rihanna.